Beating-engine.



E. A. JONES.

BEATING ENGINE.

APPLICATION mso Dwz?. |913.

jfgyj.

Patented May EDWARD A. JONES, 0F PTTSFI'LD, MAsscHusE'r'rs.

Burnie-ENGINE.

Specification of Letters Patent.

Patented May 25, 1915.

Application led December 27, 1913. Serial No. 808,953.

To all 'zc/10m, z't may concern Be it known that I, EDWARD A. JONES, acitizen of the United States, residing at Pittsfield, county ofBerkshire, and State of Massachusetts, have invented certain new anduseful Improvements in Beating-Engines, fully described and representedin the following specification and the accompanying drawings, forming apart of the same.

This invention relates to improvements in apparatus used in themanufacture of paper stock and more particularly to improvements in thattype of apparatus known as beating engines.

It is one object of the present invention to provide an improved outletconstruction for emptying the vats of beating and similar engines, theoutlet being of large dimensions and preferably positioned inthe vatbetween the front end of the central partition or mid-feather and theroll and extend` ing substantially the distance between the wall of thevat and th'e mid-feather so as to extend across the path which the stockis forced to take between these walls as it circulates to the out-let, adam being provided in the best constructions to cause a low into theoutlet, this construction permitting ythe vat to be emptied at a greaterspeed than in the constructions now employed for the purpose.

It is a further object ofV the invention to provide an improved valveconstruction for controlling the outlet whereby the valve seat may bemaintained free from1 stock at the close of the emptying operation sothat the valve when closed will properly seat.

It is a further object of the invention ,to provide a valve for theoutlet which when in raised position will also act as a dam or abutmentto cause the stock to pass into the outlet more readily.

With these and other objects in view, the invention consists in certainimproved con structions, a detailed description of ,which will'be givenin connection with the accompanying drawing, in which- Figure 1 is aside elevation partly in section of a beating engine embodyin the im-iproveniente, certain parts being ro en away to show the construction;Fig. 2 is a. plan view of the construction illustrated in Fig. 1; Fig. 3is a plan view on an elarged scale with certain parts broken away of theimproved outlet construction and valve; Fig. 4 is a verticallongitudinal section taken on line 4 1 of Fig. 3; and Fig. 5 is avertical cross sectlon taken on line 5-5 of Fig. 4, the stock retardingmeans and valve being shown 1n this figure in normal position in fulllines, and in full open position in dotted lilies when the emptyingoperation is being conducted.

Referring now to said drawing, which lllustrates the preferredembodiment of the invention, the invention is shown as 'employed in abeating engine in which provision is made for supplying water underpressure to effect a kfree circulation of the stock. It will beunderstood, however, that the novel feature-sof the invention may beemployed in beating engines in which such pro v1s1on is not made, and inother types of beating and similar engines for treating paper stock. Theengine illustrated includes a vat 1, of any suitable or desiredconstruction, being, however, as illustrated, preferably elliptical andcapacitated to hold the required amount of stock, this vat being ofwood, iron, cement, or other material, as desired. Mounted in the vat 1is a beating drum 2 mounted on ,a shaft 3 which is journaled in anysuitable or desired manner. The beatingdrum 2 is provided with the usualbeater knives 4 which coperate with a bed plate 5 of anysuitable ordesired construction positioned at the bottom of the vat tobeat up thestock. At the rear, or, as shown in the drawings, 4the left-hand side ofthe drum 2, is arranged the usual back-fall 6 which extends from oneside of the vat to a. horizontal partition or mid-feather 7 thismid-feather, extendin centrally and longitudinally of the vat 01* themajor portion of its length. The beating drum and back fall arepreferably inclosed by a cover 8 of any usual or desired construction.The lower rear xor left-hand portion of the backfall 6 is cut away toform a pressure chamber 9 which extends transversely, across the vatbetween the vat and the mid-feather, the top of this chambenbeing formedin lany suitable, Ina-nner, as by vplate ,10. Secured on the back-falLsoas to provide a jet opening 11 between the lower edge of theplate andthe bottom of thevat, the plate 1 0 extends to within a.suitabledistanceof the bottom of the vat to provide this opening. Theend of the pressure chamber adjacent to the side of the, vat isconnected .with a. ,suitablesource ofwater supply under pressure (notshown) through a pipe, as 12, as shown in Fig. 2.

From the end ofthe chamber adjacent the mid-feather extends a connection13 which passes around the rear or left-hand end of the mid-feather 7,this connection, being adapted to supply water from the pressure chamber9 around the end of the midfeather, the object of this constructionbeing to stir up or carry along the pulp or stock which is liable toaccumulate against the mid-feather on its return side.

Machines constructed in accordance with the invention will embody anoutlet which is of large dimensions and which will be located in theraceway formed by the midfeather and the walls of the beater tub, thisoutlet extending substantially, in the best constructions, acrosstheraceway so as to lie in the path of the stock, whereby the stock asit circulates about the vat passes rapidly through the outlet when thelatter is opened. The outlet is further provided with an improved valveconstruction, and this valve will in the best form of machine act whenopened as a dam or abutment and cause an even more rapid delivery of thestock through the outlet. The constructions employed to eii'ect theseobjects may be somewhat varied. In the particular constructionillustrated, the outlet is made ol large dimensions, and is preferablypositioned in the vat inside the end of the midfeather between the frontend of the midfeather and the roll. To provide a large free opening,this outlet, which is marked 14, extends substantially between the sideof the vat and the mid-feather, as illustrated. The valve forcontrolling the outlet may be of any suitable character and operate inany suitable manner. In .the parA ticular construction illustrated, thewalls of the outlet 14 form a seat for the valve 15, which is in theform of a plate extending the width of the outlet. This valve plate 1.ois pivotally mounted so that it may be swung upwardly7 to open theoutlet in the direction away from the course of the stock through thevat, the valve plate thus acting as a darn or abutment for stopping thestock and directing it through the outlet. The valve may be thus mountedin any suitable manner. In the particular construction illustrated, thewalls of the outlet 14 are provided with enlarged portions or pockets 16at suitable points, in which operate swinging arms 17 pivotally mountedon a short rock shaft 18, suitably journaled in the pock'et walls andthe side of the machine. These swinging arms carry the valve plate 15before referred to, which is mounted on the arms in any suitable manner.In the best construction, the plate will be mounted on the arms so as tobe capable of taking a slight swiveling movement to insure its properseating when closed. As shown, the arms 17 are formed at their free endwith forks 19, into which take projections 20 on the valve plate, theprojections being held in the forks of the arms by roller pins 21, whichpermits the plate to have a slight swiveling movement. The plate is thuspractically pivotally mounted in the arms, and thus is caused toproperly seat when the valve is closed. The walls of the outlet 14 areprovided with flanges 22, and the outlet is secured to the bottom of thevat by screws 23, suitable packing 21 being interposed between theflanges and the bottom of the vat to insure a tight joint. The lowersurface of the valve plate, where the same seats on the outlet, is ormay be likewise provided with suitable packing 25 to insure a tightjoint when the valve is closed.

The rock shaft 18 is operated to swing the arns and lift the valveplate, in any suitable manner. As illustrated, there is provided a handlever 26, secured to the end of the shaft on the outside of the machine,by which the shaft may be rocked in its bearings by the operator and theplate raised and lowered. It has been found in practice that the stockis very liable to accumulate on and about the valve seat during theemptying operation of the vat, and this accumulation of stock mayinterfere with the proper closing of the valve. In machines constructedin accordance with the invention, therefore, means are provided forpreventing this accumulation of stock. These means may be of variouscharacters, but as shown the outlet is provided with channels 27extending around the valve seat, these channels having their upper wallsperforated, as shown at 28, through which water or other liquid underpressure may be forced, these perforations being located adjacent thetop walls of the outlet on which the valve plate seats. Cleansing media,as water, may be supplied to the channels in any suitable manner. In thebest constructions, this will be supplied at the time the valve is open,and the supply kept up until the valve is again seated, so as toefectually prevent the accumulation of stock around the valve seat. Inthe partieular construction illustrated, water is supplied to thechannels through a pipe 29, controlled by a valve 30, the water beingsupplied from any suitable source, not shown. The valve 30 is operatedin the construction illustrated to open and supply water when thelifting movement of the valve begins, by means of a slotted link 31,operatively connected with the valve spindle, this link 31 being in turnconnected with the operating lever 26, before referred to. With thisconstruction, the valve seat is kept free from accumulated stock duringthe entire emptying operation of the vat and until the valve is actuallyseated, the parts being so proportioned as to permit the supply of wateruntil the seating of the valve.

While the invention has been shown and described in its preferred form,it will be understood that certain changes and variations in theparticular construction may be made, and that the invention is not to berestricted to the precise details shown and described, nor to the exacttype of beating engine illustrated.

What is claimed is 1. In an apparatus of the kind described thecombination with a vat, of a mid-feather in the vat, a raceway beingformed between the mid-feather and the vat side, a stock dischargeoutlet extending substantially across the raceway between the vat sideand the mid-feather so as to lie across the path of the stock, and avalve for controlling the outlet. l

2. In an apparatus of the kind described the combination with a vat, ofa mid-feather in the vat, a raceway being formed between the mid-featherand the vat side, a stock discharge outlet extending substantiallyacross the raceway between the vat side and the mid-feather so as to lieacross the path of the stock, and a valve plate for controlling theoutlet and acting in open position as a dam or abutment.

3. In an apparatus of the kind described the combination with a vat, ofa mid-feather in the vat, a raceway being formed between the mid-featherand the vat side, means for supplying water to the vat under pressure, astock discharge outlet extending substantially across the racewaybetween the vat side and the mid-feather so as to lie across the path ofthe stock, and a valve for controlling the outlet.

4. In an apparatus of the kind described the combination with a vat, otla mid-feather in the vat, a raceway being formed between the mid-featherand the vat side, means for supplying water to the vat under pressure, astock discharge outlet extending substantially across the racewaybetween the vat side and the mid-feather so as to lie across the path ofthe stock, and a valve plate for controlling the outlet and acting inopen position as a dam or abutment.

5. In an apparatus of the kind described the combination with a vat, ofa stock discharge outlet therefor, a

swinging valve for controlling the outlet,

means for swinging the valve, and means operated by the valve swingingmeans for su pplying water around the valve seat to keep the same freefrom the accumulation of stock during the emptying of the vat.

6. In an apparatus of the kind described the combination with a vathaving a midfeather', a stock discharge outlet extending between the Vatside and mid-feather, a plate forming a valve for the outlet, said platebeing arranged to be swung upwardly to the side ofthe outlet away fromthe direction of travel of the stock through the vat whereby the plateacts as an abutment and causes the stock to pass into the outlet.

7. In an apparatus of the kind described the combination with a vathaving a midfeather, a beating roller in the vat on one side of themid-feather, an outlet located between the end of the mid-feather andthe roll and extending substantially between the vat side and themid-feather and a valve plate for controlling the outlet and acting whenin its raised position as a dam or abutment.

8. In an apparatus of the character described the combination with avat, of an outlet therefor, a plate for controlling the outlet, arms onwhich the plate is mounted, pivotal connections between the plate andthe arms, and means for swinging the arms to raise and lower the plato.

9. In an apparatus of the character described the combination with avat, of an outlet therefor, a plate for controlling the outlet, asupport for the plate, pivotal connections between the plate and thesupport, and means for operating the support to raise and lower theplate.

10. In an apparatus,v of the character described the combination with avat, of an outlet therefor, a plate for controlling the outlet, asupport for the plate, a rock-shaft carrying the support, and meanslocated outside the machine for rocking the shaft to raise and lower theplate.

In testimony whereof, I have hereunto set my hand, in the presence oftwo subscribing witnesses.

EDIVARD A. JONES. Witnesses:

FRANK A. BONNEY, DAVID B. KING.

